JSonSerializer.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */


package org.openspcoop2.utils.serialization;

import java.io.OutputStream;
import java.io.Writer;
import java.lang.annotation.Annotation;
import java.util.List;
import java.util.Set;


import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;


/** 
 * Contiene utility per effettuare la serializzazione di un oggetto
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */

public class JSonSerializer implements ISerializer {

    private JsonConfig jsonConfig;
    
    public JSonSerializer() {
        this(new SerializationConfig());
    }
    
    public JSonSerializer(SerializationConfig config) {
        
        JSonSerializer filtroInternoOggettiFiltratiDiversiByteArray = null;
        if(config.getFilter().sizeFiltersByValue()>0 || config.getFilter().sizeFiltersByName()>0) {
            SerializationConfig conf = new SerializationConfig();
            conf.setFilter(new Filter());
            conf.setIdBuilder(config.getIdBuilder());
            conf.setExcludes(config.getExcludes());
            filtroInternoOggettiFiltratiDiversiByteArray = new JSonSerializer(conf);
        }
        
        JsonConfig jsonConfig = new JsonConfig();
        jsonConfig.setJsonPropertyFilter(new PropertyFilter(config.getFilter(),config.getIdBuilder(),filtroInternoOggettiFiltratiDiversiByteArray));
        if(config.getExcludes()!=null){
            jsonConfig.setExcludes(config.getExcludes().toArray(new String[]{}));
        }
        this.jsonConfig = jsonConfig;
    }
    
    @Override
    public String getObject(Object o) throws IOException{
        try{
            Utilities.normalizeDateObjects(o);
            if( (o instanceof Enum) ){
                JSONArray jsonObject = JSONArray.fromObject( o , this.jsonConfig );
                return jsonObject.toString();
            }
            else if( (o != null && o.getClass().isArray()) ){
                JSONArray jsonObject = new JSONArray();
                Object[] array = (Object[]) o;
                for (int i = 0; i < array.length; i++) {
                    Object object = array[i];
                    jsonObject.add(JSONObject.fromObject( object , this.jsonConfig ));
                }
                return jsonObject.toString();
            }
            else if( (o instanceof List) ){
                JSONArray jsonObject = new JSONArray();
                List<?> list = (List<?>) o;
                for (int i = 0; i < list.size(); i++) {
                    Object object = list.get(i);
                    jsonObject.add(JSONObject.fromObject( object , this.jsonConfig ));
                }
                return jsonObject.toString();
            }
            else if( (o instanceof Set) ){
                Set<?> set = (Set<?>) o;
                return this.getObject(set.toArray());
            }
            else if((o instanceof Annotation) || o != null && o.getClass().isAnnotation())
                throw new IOException("'object' is an Annotation.");
            else {
                JSONObject jsonObject = JSONObject.fromObject( o , this.jsonConfig );
                return jsonObject.toString();
            }
            
        }catch(Exception e){
            throw new IOException(e.getMessage(),e);
        }
    }
    
    @Override
    public void writeObject(Object o,OutputStream out) throws IOException{
        try{
            //Utilities.normalizeDateObjects(o);
            String s = this.getObject(o);
            out.write(s.getBytes());
        }catch(Exception e){
            throw new IOException(e.getMessage(),e);
        }
    }
    
    @Override
    public void writeObject(Object o,Writer out) throws IOException{
        try{
            //Utilities.normalizeDateObjects(o);
            String s = this.getObject(o);
            out.write(s);
        }catch(Exception e){
            throw new IOException(e.getMessage(),e);
        }
    }

}